Rhodia Fiber & Resin Intermediates

Rhodia Operations

Gerald Bocquenet

Philippe Marion

Philippe Leconte

Roland Jacquot

Virginie Belliere-Baca

Didier Morvan

Henri Chiarelli

Patrick Houssier

Loic Baussaron

Yves Courtemanche

A method for preparing a mixture (M) comprising at least an alcohol (Aj), said method comprising the following steps: i) a step in which at least an alcohol (Ai) in gaseous state is oligomerized, thereby producing a mixture (A); ii) a step in which the mixture (A) is condensed to a gaseous stream and to a liquid stream corresponding to a condensed mixture (A); and iii) a step in which the condensed mixture (A) is hydrogenated in the liquid state.

Method for preparing a mixture of alcohols

The invention concerns a method for evaporating aminonitrile and water in conditions limiting or eliminating the formation of heavy by-products in particular amino-carboxylic acid oligomers. To avoid said inconvenience, said method for evaporating aminonitrile and water is characterised in that the water in vapour state serves as balance gas for evaporation.

Method for evaporating aminonitrile

Lactam dehydration method

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Communay, France

Gerald Bocquenet